OK, let's crack this. We're given 319 and our task is to multiply it by 424. Essentially, we'll be adding 319 to itself 424 times.
Step 1: 0 + 319 = 319
Step 2: 319 + 319 = 638
Step 3: 638 + 319 = 957
Step 4: 957 + 319 = 1276
Step 5: 1276 + 319 = 1595
Step 6: 1595 + 319 = 1914
Step 7: 1914 + 319 = 2233
Step 8: 2233 + 319 = 2552
Step 9: 2552 + 319 = 2871
Step 10: 2871 + 319 = 3190
Step 11: 3190 + 319 = 3509
Step 12: 3509 + 319 = 3828
Step 13: 3828 + 319 = 4147
Step 14: 4147 + 319 = 4466
Step 15: 4466 + 319 = 4785
Step 16: 4785 + 319 = 5104
Step 17: 5104 + 319 = 5423
Step 18: 5423 + 319 = 5742
Step 19: 5742 + 319 = 6061
Step 20: 6061 + 319 = 6380
Step 21: 6380 + 319 = 6699
Step 22: 6699 + 319 = 7018
Step 23: 7018 + 319 = 7337
Step 24: 7337 + 319 = 7656
Step 25: 7656 + 319 = 7975
Step 26: 7975 + 319 = 8294
Step 27: 8294 + 319 = 8613
Step 28: 8613 + 319 = 8932
Step 29: 8932 + 319 = 9251
Step 30: 9251 + 319 = 9570
Step 31: 9570 + 319 = 9889
Step 32: 9889 + 319 = 10208
Step 33: 10208 + 319 = 10527
Step 34: 10527 + 319 = 10846
Step 35: 10846 + 319 = 11165
Step 36: 11165 + 319 = 11484
Step 37: 11484 + 319 = 11803
Step 38: 11803 + 319 = 12122
Step 39: 12122 + 319 = 12441
Step 40: 12441 + 319 = 12760
Step 41: 12760 + 319 = 13079
Step 42: 13079 + 319 = 13398
Step 43: 13398 + 319 = 13717
Step 44: 13717 + 319 = 14036
Step 45: 14036 + 319 = 14355
Step 46: 14355 + 319 = 14674
Step 47: 14674 + 319 = 14993
Step 48: 14993 + 319 = 15312
Step 49: 15312 + 319 = 15631
Step 50: 15631 + 319 = 15950
Step 51: 15950 + 319 = 16269
Step 52: 16269 + 319 = 16588
Step 53: 16588 + 319 = 16907
Step 54: 16907 + 319 = 17226
Step 55: 17226 + 319 = 17545
Step 56: 17545 + 319 = 17864
Step 57: 17864 + 319 = 18183
Step 58: 18183 + 319 = 18502
Step 59: 18502 + 319 = 18821
Step 60: 18821 + 319 = 19140
Step 61: 19140 + 319 = 19459
Step 62: 19459 + 319 = 19778
Step 63: 19778 + 319 = 20097
Step 64: 20097 + 319 = 20416
Step 65: 20416 + 319 = 20735
Step 66: 20735 + 319 = 21054
Step 67: 21054 + 319 = 21373
Step 68: 21373 + 319 = 21692
Step 69: 21692 + 319 = 22011
Step 70: 22011 + 319 = 22330
Step 71: 22330 + 319 = 22649
Step 72: 22649 + 319 = 22968
Step 73: 22968 + 319 = 23287
Step 74: 23287 + 319 = 23606
Step 75: 23606 + 319 = 23925
Step 76: 23925 + 319 = 24244
Step 77: 24244 + 319 = 24563
Step 78: 24563 + 319 = 24882
Step 79: 24882 + 319 = 25201
Step 80: 25201 + 319 = 25520
Step 81: 25520 + 319 = 25839
Step 82: 25839 + 319 = 26158
Step 83: 26158 + 319 = 26477
Step 84: 26477 + 319 = 26796
Step 85: 26796 + 319 = 27115
Step 86: 27115 + 319 = 27434
Step 87: 27434 + 319 = 27753
Step 88: 27753 + 319 = 28072
Step 89: 28072 + 319 = 28391
Step 90: 28391 + 319 = 28710
Step 91: 28710 + 319 = 29029
Step 92: 29029 + 319 = 29348
Step 93: 29348 + 319 = 29667
Step 94: 29667 + 319 = 29986
Step 95: 29986 + 319 = 30305
Step 96: 30305 + 319 = 30624
Step 97: 30624 + 319 = 30943
Step 98: 30943 + 319 = 31262
Step 99: 31262 + 319 = 31581
Step 100: 31581 + 319 = 31900
Step 101: 31900 + 319 = 32219
Step 102: 32219 + 319 = 32538
Step 103: 32538 + 319 = 32857
Step 104: 32857 + 319 = 33176
Step 105: 33176 + 319 = 33495
Step 106: 33495 + 319 = 33814
Step 107: 33814 + 319 = 34133
Step 108: 34133 + 319 = 34452
Step 109: 34452 + 319 = 34771
Step 110: 34771 + 319 = 35090
Step 111: 35090 + 319 = 35409
Step 112: 35409 + 319 = 35728
Step 113: 35728 + 319 = 36047
Step 114: 36047 + 319 = 36366
Step 115: 36366 + 319 = 36685
Step 116: 36685 + 319 = 37004
Step 117: 37004 + 319 = 37323
Step 118: 37323 + 319 = 37642
Step 119: 37642 + 319 = 37961
Step 120: 37961 + 319 = 38280
Step 121: 38280 + 319 = 38599
Step 122: 38599 + 319 = 38918
Step 123: 38918 + 319 = 39237
Step 124: 39237 + 319 = 39556
Step 125: 39556 + 319 = 39875
Step 126: 39875 + 319 = 40194
Step 127: 40194 + 319 = 40513
Step 128: 40513 + 319 = 40832
Step 129: 40832 + 319 = 41151
Step 130: 41151 + 319 = 41470
Step 131: 41470 + 319 = 41789
Step 132: 41789 + 319 = 42108
Step 133: 42108 + 319 = 42427
Step 134: 42427 + 319 = 42746
Step 135: 42746 + 319 = 43065
Step 136: 43065 + 319 = 43384
Step 137: 43384 + 319 = 43703
Step 138: 43703 + 319 = 44022
Step 139: 44022 + 319 = 44341
Step 140: 44341 + 319 = 44660
Step 141: 44660 + 319 = 44979
Step 142: 44979 + 319 = 45298
Step 143: 45298 + 319 = 45617
Step 144: 45617 + 319 = 45936
Step 145: 45936 + 319 = 46255
Step 146: 46255 + 319 = 46574
Step 147: 46574 + 319 = 46893
Step 148: 46893 + 319 = 47212
Step 149: 47212 + 319 = 47531
Step 150: 47531 + 319 = 47850
Step 151: 47850 + 319 = 48169
Step 152: 48169 + 319 = 48488
Step 153: 48488 + 319 = 48807
Step 154: 48807 + 319 = 49126
Step 155: 49126 + 319 = 49445
Step 156: 49445 + 319 = 49764
Step 157: 49764 + 319 = 50083
Step 158: 50083 + 319 = 50402
Step 159: 50402 + 319 = 50721
Step 160: 50721 + 319 = 51040
Step 161: 51040 + 319 = 51359
Step 162: 51359 + 319 = 51678
Step 163: 51678 + 319 = 51997
Step 164: 51997 + 319 = 52316
Step 165: 52316 + 319 = 52635
Step 166: 52635 + 319 = 52954
Step 167: 52954 + 319 = 53273
Step 168: 53273 + 319 = 53592
Step 169: 53592 + 319 = 53911
Step 170: 53911 + 319 = 54230
Step 171: 54230 + 319 = 54549
Step 172: 54549 + 319 = 54868
Step 173: 54868 + 319 = 55187
Step 174: 55187 + 319 = 55506
Step 175: 55506 + 319 = 55825
Step 176: 55825 + 319 = 56144
Step 177: 56144 + 319 = 56463
Step 178: 56463 + 319 = 56782
Step 179: 56782 + 319 = 57101
Step 180: 57101 + 319 = 57420
Step 181: 57420 + 319 = 57739
Step 182: 57739 + 319 = 58058
Step 183: 58058 + 319 = 58377
Step 184: 58377 + 319 = 58696
Step 185: 58696 + 319 = 59015
Step 186: 59015 + 319 = 59334
Step 187: 59334 + 319 = 59653
Step 188: 59653 + 319 = 59972
Step 189: 59972 + 319 = 60291
Step 190: 60291 + 319 = 60610
Step 191: 60610 + 319 = 60929
Step 192: 60929 + 319 = 61248
Step 193: 61248 + 319 = 61567
Step 194: 61567 + 319 = 61886
Step 195: 61886 + 319 = 62205
Step 196: 62205 + 319 = 62524
Step 197: 62524 + 319 = 62843
Step 198: 62843 + 319 = 63162
Step 199: 63162 + 319 = 63481
Step 200: 63481 + 319 = 63800
Step 201: 63800 + 319 = 64119
Step 202: 64119 + 319 = 64438
Step 203: 64438 + 319 = 64757
Step 204: 64757 + 319 = 65076
Step 205: 65076 + 319 = 65395
Step 206: 65395 + 319 = 65714
Step 207: 65714 + 319 = 66033
Step 208: 66033 + 319 = 66352
Step 209: 66352 + 319 = 66671
Step 210: 66671 + 319 = 66990
Step 211: 66990 + 319 = 67309
Step 212: 67309 + 319 = 67628
Step 213: 67628 + 319 = 67947
Step 214: 67947 + 319 = 68266
Step 215: 68266 + 319 = 68585
Step 216: 68585 + 319 = 68904
Step 217: 68904 + 319 = 69223
Step 218: 69223 + 319 = 69542
Step 219: 69542 + 319 = 69861
Step 220: 69861 + 319 = 70180
Step 221: 70180 + 319 = 70499
Step 222: 70499 + 319 = 70818
Step 223: 70818 + 319 = 71137
Step 224: 71137 + 319 = 71456
Step 225: 71456 + 319 = 71775
Step 226: 71775 + 319 = 72094
Step 227: 72094 + 319 = 72413
Step 228: 72413 + 319 = 72732
Step 229: 72732 + 319 = 73051
Step 230: 73051 + 319 = 73370
Step 231: 73370 + 319 = 73689
Step 232: 73689 + 319 = 74008
Step 233: 74008 + 319 = 74327
Step 234: 74327 + 319 = 74646
Step 235: 74646 + 319 = 74965
Step 236: 74965 + 319 = 75284
Step 237: 75284 + 319 = 75603
Step 238: 75603 + 319 = 75922
Step 239: 75922 + 319 = 76241
Step 240: 76241 + 319 = 76560
Step 241: 76560 + 319 = 76879
Step 242: 76879 + 319 = 77198
Step 243: 77198 + 319 = 77517
Step 244: 77517 + 319 = 77836
Step 245: 77836 + 319 = 78155
Step 246: 78155 + 319 = 78474
Step 247: 78474 + 319 = 78793
Step 248: 78793 + 319 = 79112
Step 249: 79112 + 319 = 79431
Step 250: 79431 + 319 = 79750
Step 251: 79750 + 319 = 80069
Step 252: 80069 + 319 = 80388
Step 253: 80388 + 319 = 80707
Step 254: 80707 + 319 = 81026
Step 255: 81026 + 319 = 81345
Step 256: 81345 + 319 = 81664
Step 257: 81664 + 319 = 81983
Step 258: 81983 + 319 = 82302
Step 259: 82302 + 319 = 82621
Step 260: 82621 + 319 = 82940
Step 261: 82940 + 319 = 83259
Step 262: 83259 + 319 = 83578
Step 263: 83578 + 319 = 83897
Step 264: 83897 + 319 = 84216
Step 265: 84216 + 319 = 84535
Step 266: 84535 + 319 = 84854
Step 267: 84854 + 319 = 85173
Step 268: 85173 + 319 = 85492
Step 269: 85492 + 319 = 85811
Step 270: 85811 + 319 = 86130
Step 271: 86130 + 319 = 86449
Step 272: 86449 + 319 = 86768
Step 273: 86768 + 319 = 87087
Step 274: 87087 + 319 = 87406
Step 275: 87406 + 319 = 87725
Step 276: 87725 + 319 = 88044
Step 277: 88044 + 319 = 88363
Step 278: 88363 + 319 = 88682
Step 279: 88682 + 319 = 89001
Step 280: 89001 + 319 = 89320
Step 281: 89320 + 319 = 89639
Step 282: 89639 + 319 = 89958
Step 283: 89958 + 319 = 90277
Step 284: 90277 + 319 = 90596
Step 285: 90596 + 319 = 90915
Step 286: 90915 + 319 = 91234
Step 287: 91234 + 319 = 91553
Step 288: 91553 + 319 = 91872
Step 289: 91872 + 319 = 92191
Step 290: 92191 + 319 = 92510
Step 291: 92510 + 319 = 92829
Step 292: 92829 + 319 = 93148
Step 293: 93148 + 319 = 93467
Step 294: 93467 + 319 = 93786
Step 295: 93786 + 319 = 94105
Step 296: 94105 + 319 = 94424
Step 297: 94424 + 319 = 94743
Step 298: 94743 + 319 = 95062
Step 299: 95062 + 319 = 95381
Step 300: 95381 + 319 = 95700
Step 301: 95700 + 319 = 96019
Step 302: 96019 + 319 = 96338
Step 303: 96338 + 319 = 96657
Step 304: 96657 + 319 = 96976
Step 305: 96976 + 319 = 97295
Step 306: 97295 + 319 = 97614
Step 307: 97614 + 319 = 97933
Step 308: 97933 + 319 = 98252
Step 309: 98252 + 319 = 98571
Step 310: 98571 + 319 = 98890
Step 311: 98890 + 319 = 99209
Step 312: 99209 + 319 = 99528
Step 313: 99528 + 319 = 99847
Step 314: 99847 + 319 = 100166
Step 315: 100166 + 319 = 100485
Step 316: 100485 + 319 = 100804
Step 317: 100804 + 319 = 101123
Step 318: 101123 + 319 = 101442
Step 319: 101442 + 319 = 101761
Step 320: 101761 + 319 = 102080
Step 321: 102080 + 319 = 102399
Step 322: 102399 + 319 = 102718
Step 323: 102718 + 319 = 103037
Step 324: 103037 + 319 = 103356
Step 325: 103356 + 319 = 103675
Step 326: 103675 + 319 = 103994
Step 327: 103994 + 319 = 104313
Step 328: 104313 + 319 = 104632
Step 329: 104632 + 319 = 104951
Step 330: 104951 + 319 = 105270
Step 331: 105270 + 319 = 105589
Step 332: 105589 + 319 = 105908
Step 333: 105908 + 319 = 106227
Step 334: 106227 + 319 = 106546
Step 335: 106546 + 319 = 106865
Step 336: 106865 + 319 = 107184
Step 337: 107184 + 319 = 107503
Step 338: 107503 + 319 = 107822
Step 339: 107822 + 319 = 108141
Step 340: 108141 + 319 = 108460
Step 341: 108460 + 319 = 108779
Step 342: 108779 + 319 = 109098
Step 343: 109098 + 319 = 109417
Step 344: 109417 + 319 = 109736
Step 345: 109736 + 319 = 110055
Step 346: 110055 + 319 = 110374
Step 347: 110374 + 319 = 110693
Step 348: 110693 + 319 = 111012
Step 349: 111012 + 319 = 111331
Step 350: 111331 + 319 = 111650
Step 351: 111650 + 319 = 111969
Step 352: 111969 + 319 = 112288
Step 353: 112288 + 319 = 112607
Step 354: 112607 + 319 = 112926
Step 355: 112926 + 319 = 113245
Step 356: 113245 + 319 = 113564
Step 357: 113564 + 319 = 113883
Step 358: 113883 + 319 = 114202
Step 359: 114202 + 319 = 114521
Step 360: 114521 + 319 = 114840
Step 361: 114840 + 319 = 115159
Step 362: 115159 + 319 = 115478
Step 363: 115478 + 319 = 115797
Step 364: 115797 + 319 = 116116
Step 365: 116116 + 319 = 116435
Step 366: 116435 + 319 = 116754
Step 367: 116754 + 319 = 117073
Step 368: 117073 + 319 = 117392
Step 369: 117392 + 319 = 117711
Step 370: 117711 + 319 = 118030
Step 371: 118030 + 319 = 118349
Step 372: 118349 + 319 = 118668
Step 373: 118668 + 319 = 118987
Step 374: 118987 + 319 = 119306
Step 375: 119306 + 319 = 119625
Step 376: 119625 + 319 = 119944
Step 377: 119944 + 319 = 120263
Step 378: 120263 + 319 = 120582
Step 379: 120582 + 319 = 120901
Step 380: 120901 + 319 = 121220
Step 381: 121220 + 319 = 121539
Step 382: 121539 + 319 = 121858
Step 383: 121858 + 319 = 122177
Step 384: 122177 + 319 = 122496
Step 385: 122496 + 319 = 122815
Step 386: 122815 + 319 = 123134
Step 387: 123134 + 319 = 123453
Step 388: 123453 + 319 = 123772
Step 389: 123772 + 319 = 124091
Step 390: 124091 + 319 = 124410
Step 391: 124410 + 319 = 124729
Step 392: 124729 + 319 = 125048
Step 393: 125048 + 319 = 125367
Step 394: 125367 + 319 = 125686
Step 395: 125686 + 319 = 126005
Step 396: 126005 + 319 = 126324
Step 397: 126324 + 319 = 126643
Step 398: 126643 + 319 = 126962
Step 399: 126962 + 319 = 127281
Step 400: 127281 + 319 = 127600
Step 401: 127600 + 319 = 127919
Step 402: 127919 + 319 = 128238
Step 403: 128238 + 319 = 128557
Step 404: 128557 + 319 = 128876
Step 405: 128876 + 319 = 129195
Step 406: 129195 + 319 = 129514
Step 407: 129514 + 319 = 129833
Step 408: 129833 + 319 = 130152
Step 409: 130152 + 319 = 130471
Step 410: 130471 + 319 = 130790
Step 411: 130790 + 319 = 131109
Step 412: 131109 + 319 = 131428
Step 413: 131428 + 319 = 131747
Step 414: 131747 + 319 = 132066
Step 415: 132066 + 319 = 132385
Step 416: 132385 + 319 = 132704
Step 417: 132704 + 319 = 133023
Step 418: 133023 + 319 = 133342
Step 419: 133342 + 319 = 133661
Step 420: 133661 + 319 = 133980
Step 421: 133980 + 319 = 134299
Step 422: 134299 + 319 = 134618
Step 423: 134618 + 319 = 134937
Step 424: 134937 + 319 = 135256

So, 319*424 = 135256